Disable check_no_default_route thread.

re6stnet

@@ -341,7 +341,6 @@ def main():
                 call(if_rt)
                 if_rt += x[1:]
                 call(if_rt[:3] + ['add', 'proto', 'static'] + if_rt[4:])
-
             else:
                 def check_no_default_route():
                     try:
@@ -360,7 +359,7 @@ def main():
                         exit(1)
                 t = threading.Thread(target=check_no_default_route)
                 t.daemon = True
-                t.start()
+                # t.start()
 
             # adding tap-windows driver will break others, so we add
             # all drivers here